Just got the very sad news that Mark Stone, who played bass with the Van Halen brothers in Genesis, Mammoth, and Van Halen between 1970-1974, has passed away.

Mark helped lay the foundation the band we all love. RIP. Condolences to his wife and all those who loved him. pic.twitter.com/xKQ2f9sKcM

— Greg Renoff (@GregRenoff) September 27, 2020